Steady-state and transient ampacity of bus bar

Coneybeer, R.T.; Black, W. Z.; Bush, R. A.

doi:10.1109/61.329515

Cited by 38 publications

(40 citation statements)

References 7 publications

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“…It is the sum of [25] convection γ n and radiation α r coefficients. The first component includes, among others, wind speed V [19]. The cross flow direction relative to the line was assumed.…”

Section: Physical Model Of the Accc Linementioning

confidence: 99%

“…The temperature distributions (37)-(39) and other parameters of the ACCC conductor were calculated using a software developed in the Mathematica 10.4 environment [29]. The following data [3,19,23,25] were adopted:…”

Section: The Time-and-space-variable Heating Curves Steady State Curmentioning

confidence: 99%

“…The experimental methods [6] are also worth mentioning. The method of measuring variable temperature in a cylindrical current-heated system is briefly described in [19] (chapter experimental verification). The calculations given in this paper can be experimentally verified in the same way.…”

Section: Introductionmentioning

confidence: 99%

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Transient Thermal Field Analysis in ACCC Power Lines by the Green’s Function Method

Gołębiowski

Zaręba

2020

Energies

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The paper investigates the dynamics of the thermal field of the ACCC (aluminum conductor composite core) line. The system was heated by solar radiation and current flow. Conductor cooling was modeled using the total heat transfer coefficient as the sum of convective and radiative components. The temperature increase generated by the current is described by a system of parabolic differential equations with an appropriate set of boundary, initial and continuity condition. The mentioned boundary-initial problem was solved by a modified Green’s method, adapted to the layered structure of the system. For this purpose, Green’s functions, as the kernels of integral operators inverse to differential ones, were determined. Aluminum resistivity and heat transfer coefficient change significantly with temperature. For this reason, the solution to the problem is presented in the form of a lower and upper estimation of the heating curve and local time constant. A steady-state current rating was also determined. The results are presented graphically and verified by other methods (power balance and finite element). The physical interpretation of the presented solution is also given.

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Section: Physical Model Of the Accc Linementioning

confidence: 99%

Section: The Time-and-space-variable Heating Curves Steady State Curmentioning

confidence: 99%

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Transient Thermal Field Analysis in ACCC Power Lines by the Green’s Function Method

Gołębiowski

Zaręba

2020

Energies

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“…Although several studies have been performed in recent years on busbar apparatus [1][2][3][4][5], little information is available concerning with the vibration and noise analysis.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Vibration and Acoustic Radiation Characteristics of Busbar Bridge System under Electromagnetic Force

Jin

Feng

2007

Electric Power Components and Systems

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The numerical simulations for predicting the operation noise of threephase low voltage and heavy current busbar bridge under electromagnetic force are described. A 3D FEM structural model and a 3D acoustic model based on boundary element method (BEM) are developed. The vibro-acoustic characteristics of the system are calculated according to the natural frequencies and the mode shapes. The calculated results are compared with the measured ones and that shows the effectiveness of the simulation models and methods. Based on the analysis, several feasible structure modifications are proposed to control the noise. Results show that these methods can reduce the noise effectively.

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“…This model will be useful in the calculation and estimation of current carrying capacity, stray inductance and operation temperature. Several numerical and analytical methods have been studies in the past few years, among which [12]- [14] made steady-state and transient analyses, while a 2D analysis was carried out in both [15] [16]. Because of the slow transient thermal characteristic and fast electric transients of busbars, the temperature change caused by a fast and periodic change current can be ignored [17] [18].…”

Section: Introductionmentioning

confidence: 99%

Improvement on the Laminated Busbar of NPC Three-Level Inverters based on a Supersymmetric Mirror Circulation 3D Cubical Thermal Model

He¹,

Xu²,

Geng³

2016

Journal of Power Electronics

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Laminated busbars with a low stray inductance are widely used in NPC three-level inverters, even though some of them have poor performances in heat equilibrium and overvoltage suppression. Therefore, a theoretical method is in need to establish an accurate mathematical model of laminated busbars and to calculate the impedance and stray inductance of each commutation loop to improve the heat equilibrium and overvoltage suppression performance. Firstly, an equivalent circuit of a NPC three-level inverter laminated busbar was built with an analysis of the commutation processes. Secondly, on the basis of a 3D (three dimensional) cubical thermal model and mirror circulation theory, a supersymmetric mirror circulation 3D cubical thermal model was built. Based on this, the laminated busbar was decomposed in 3D space to calculate the equivalent resistance and stray inductance in each commutation loop. Finally, the model and analysis results were put into a busbar design, simulation and experiments, whose results demonstrate the accuracy and feasibility of the proposed method.

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Steady-state and transient ampacity of bus bar

Cited by 38 publications

References 7 publications

Transient Thermal Field Analysis in ACCC Power Lines by the Green’s Function Method

Transient Thermal Field Analysis in ACCC Power Lines by the Green’s Function Method

Analysis of Vibration and Acoustic Radiation Characteristics of Busbar Bridge System under Electromagnetic Force

Improvement on the Laminated Busbar of NPC Three-Level Inverters based on a Supersymmetric Mirror Circulation 3D Cubical Thermal Model

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